Automated Deduction — CADE-12

Volume 814 of the series Lecture Notes in Computer Science pp 57-71


The search efficiency of theorem proving strategies

  • David A. PlaistedAffiliated withDepartment of Computer Science, University of North Carolina at Chapel HillMPI fuer InformatikFachbereich Informatik, Universitaet Kaiserslautern

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We analyze the search efficiency of a number of common refutational theorem proving strategies for first-order logic. We show that most of them produce search spaces of exponential size even on simple sets of clauses, or else are not sensitive to the goal. We also discuss clause linking, a new procedure that uses a reduction to propositional calculus, and show that it, together with methods that cache subgoals, have behavior that is more favorable in some respects.